SUSE CVE-2005-0236

The International Domain Name IDN support in Omniweb 5 allows remote attackers to spoof domain names using punycode encoded domain names that are decoded in URLs and SSL certificates in a way that uses homograph characters from other character sets, which facilitates phishing attacks...

SUSE CVE-2009-3049

Opera before 10.00 does not properly display all characters in Internationalized Domain Names IDN in the address bar, which allows remote attackers to spoof URLs and conduct phishing attacks, related to Unicode and Punycode...

SUSE CVE-2017-5383

URLs containing certain unicode glyphs for alternative hyphens and quotes do not properly trigger punycode display, allowing for domain name spoofing attacks in the location bar. This vulnerability affects Thunderbird 45.7, Firefox ESR 45.7, and Firefox 51...

SUSE CVE-2017-7764

Characters from the "Canadian Syllabics" unicode block can be mixed with characters from other unicode blocks in the addressbar instead of being rendered as their raw "punycode" form, allowing for domain name spoofing attacks through character confusion. The current Unicode standard allows...

SUSE CVE-2017-7838

Punycode format text will be displayed for entire qualified international domain names in some instances when a sub-domain triggers the punycode display instead of the primary domain being displayed in native script and the sub-domain only displaying as punycode. This could be used for limited...

SUSE CVE-2019-11721

The unicode latin 'kra' character can be used to spoof a standard 'k' character in the addressbar. This allows for domain spoofing attacks as do not display as punycode text, allowing for user confusion. This vulnerability affects Firefox 68...

SUSE CVE-2019-12290

GNU libidn2 before 2.2.0 fails to perform the roundtrip checks specified in RFC3490 Section 4.2 when converting A-labels to U-labels. This makes it possible in some circumstances for one domain to impersonate another. By creating a malicious domain that matches a target domain except for the...

SUSE CVE-2019-15237

Roundcube Webmail through 1.3.9 mishandles Punycode xn-- domain names, leading to homograph attacks...

Disneyland Malware Team: It’s a Puny World After All

A financial cybercrime group calling itself the Disneyland Team has been making liberal use of visually confusing phishing domains that spoof popular bank brands using Punycode, an Internet standard that allows web browsers to render domain names with non-Latin alphabets like Cyrillic. The...

Why Did the OpenSSL Punycode Vulnerability Happen

Some room-temperature takes on yesterdays not-quite-RCE vulnerabilities in OpenSSL 3.0, and on what there is to learn about safe cryptography engineering. A recap Yesterday OpenSSL published version 3.0.7, which was pre-announced to contain a fix for a CRITICAL vulnerability, the first one since...

OpenSSL Releases Patch for 2 New High-Severity Vulnerabilities

The OpenSSL project has rolled out fixes to contain two high-severity flaws in its widely used cryptography library that could result in a denial-of-service DoS and remote code execution. The issues, tracked as CVE-2022-3602 and CVE-2022-3786, have been described as buffer overrun vulnerabilities...

OpenSSL 3.0.0 to 3.0.6 decodes some punycode email addresses in X.509 certificates improperly

Overview Two buffer overflow vulnerabilities were discovered in OpenSSL versions 3.0.0 through 3.0.6. These vulnerabilities were introduced in version 3.0.0 with the inclusion of support for punycode email address parsing for X.509 certificates. OpenSSL's assessment of the severity of the...

Homograph Attacks

roundcube is vulnerable to homograph attacks. The vulnerability exists due to the way the system mishandles Punycode xn-- domain names which allows an attacker to cause a homograph attack...

CVE-2019-9636

It was discovered that python's functions urllib.parse.urlsplit and urllib.parse.urlparse do not properly handle URLs encoded with Punycode/Internationalizing Domain Names in Applications IDNA, which may result in a wrong domain name specifically the netloc component of URL - user@domain:port bei...

The vulnerability in the implementation of the Punycode sequence transformation method in Mozilla Firefox browsers allows attackers to perform spamming attacks.

The vulnerability of the Punycode sequence transformation method implemented in Mozilla Firefox browsers is related to the lack of a mechanism for checking input data. Exploiting this vulnerability allows attackers who operate remotely to carry out spam attacks...

Mail.ru: Account takeover in cups.mail.ru using punycode characters

A logical bug in database collation usage for string comparison during access recovery process allowed to takover account in cups.mail.ru by registering colliding Unicode domain...

DEBIAN-CVE-2020-12474

Telegram Desktop through 2.0.1, Telegram through 6.0.1 for Android, and Telegram through 6.0.1 for iOS allow an IDN Homograph attack via Punycode in a public URL or a group chat invitation URL...

CVE-2020-12474

Telegram Desktop through 2.0.1, Telegram through 6.0.1 for Android, and Telegram through 6.0.1 for iOS allow an IDN Homograph attack via Punycode in a public URL or a group chat invitation URL...

Design/Logic Flaw

Telegram Desktop through 2.0.1, Telegram through 6.0.1 for Android, and Telegram through 6.0.1 for iOS allow an IDN Homograph attack via Punycode in a public URL or a group chat invitation URL...

CVE-2020-12474

Telegram Desktop through 2.0.1, Telegram through 6.0.1 for Android, and Telegram through 6.0.1 for iOS allow an IDN Homograph attack via Punycode in a public URL or a group chat invitation URL...